Table 3. Chest computed tomography patterns (phenotypes) in correlation with the minimally invasive autopsy findings.

CT pattern (phenotype)	N cases	Main MIA features (N cases)
Indeterminate for viral pneumonia	3	Hyaline membranes [2], plugs of organizing fibroblastic tissue [1]
Mild viral pneumonia	2	Hyaline membranes and fibrine “balls” [1], interstitial fibrosis [1]
Moderate viral pneumonia	2	Plugs of organizing fibroblastic tissue and fibrine “balls” [1], interstitial fibrosis [1]
Mild viral pneumonia with OP foci	1	Hemorrhagic infarct
Moderate viral pneumonia with OP foci	2	Fibrine “balls” [1] and interstitial fibrosis [1]
Severe viral pneumonia with OP foci	2	Hemorrhagic infarct [1], fibrine “balls” [1]
Severe viral pneumonia with DAD signs	2	All features including hemorrhagic infarct [1], hyaline membrane [1]
Severe viral pneumonia with diffuse progressive OP pattern	1	Interstitial fibrosis

CT, computed tomography; MIA, minimally invasive autopsy; OP, organizing pneumonia; DAD, diffuse alveolar damage.